6.5

CVE-2017-6030

A Predictable Value Range from Previous Values issue was discovered in Schneider Electric Modicon PLCs Modicon M221, firmware versions prior to Version 1.5.0.0, Modicon M241, firmware versions prior to Version 4.0.5.11, and Modicon M251, firmware versions prior to Version 4.0.5.11. The affected products generate insufficiently random TCP initial sequence numbers that may allow an attacker to predict the numbers from previous values. This may allow an attacker to spoof or disrupt TCP connections.

Data is provided by the National Vulnerability Database (NVD)
Schneider-electricModicon M241 Firmware Version <= 4.0.3.20
   Schneider-electricModicon M241 Version-
Schneider-electricModicon M251 Firmware Version <= 4.0.3.20
   Schneider-electricModicon M251 Version-
Schneider-electricModicon M221 Firmware Version <= 1.1.1.5
   Schneider-electricModicon M221 Version-
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.39% 0.574
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 6.5 3.9 2.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
nvd@nist.gov 6.4 10 4.9
AV:N/AC:L/Au:N/C:N/I:P/A:P
CWE-331 Insufficient Entropy

The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.

CWE-343 Predictable Value Range from Previous Values

The product's random number generator produces a series of values which, when observed, can be used to infer a relatively small range of possibilities for the next value that could be generated.